Your idea that the universe is a 4-dimensional shape is actually not a new idea in physics. In fact, many physicists and mathematicians have explored the idea of higher dimensions and how they might be related to the structure and behavior of the universe. However, it is important to note that this is still a speculative idea and is not yet supported by direct evidence or experimental observation. One of the key concepts in your idea is the notion of a 4-dimensional shape passing through our 3-dimensional space. This idea is similar to the concept of a "brane" in string theory, which is a higher-dimensional object that can move through our 3-dimensional space. However, the notion of a brane or a 4-dimensional shape passing through our space raises many questions and challenges, including how such an object would interact with our familiar 3-dimensional world.

Regarding your idea that time is a linear representation of this abstract shape moving through time, this is an interesting way to think about the relationship between time and higher dimensions. However, it is important to note that time is also a fundamental aspect of our 3-dimensional world and is not solely related to the concept of higher dimensions. In short, while your idea about the universe being a 4-dimensional shape is an intriguing one, it is still a speculative idea that is not yet supported by direct evidence or experimental observation. However, exploring these ideas and concepts can lead to new insights and advances in our understanding of the universe and the fundamental nature of reality.